Has anyone experienced two-five day nausea jags where the only option is to fast and even water feels too uncomfortable on the stomach? This happens every time around my menstral cycle. I've had all the tests and have discovered IBS along with first stages endometriosis. I've experienced IBS since I was eight years old with "D" for years. The last three years I've been experiencing "C" and now I have been having progressively worse jags of nausea before or after my menstral cycle. The nausea is so bad that I miss work three days each month. It's hard to keep a job this way. Am I the only one with these symptoms? Does anyone else experience symilar episodes of nausea? I've taken all the other tests and the doctors all just keep saying it's IBS and that all my insides look great. I just want to know if it's my IBS that's causing this nausea. Whatever I have, it seems to be chronic and is definately miserable. If you relate, please respond.